The REM T3b for the PS90 USG "Black Ring Sight" is now available for sale and is in stock. :clap:
The Price is $89.00 shipped. I take Visa, Mastercard and Discover or check or money order. I do also take PAYPAL.
Go to http://WWW.M1Bullpup.com" onclick="window.open(this.href);return false; to pay.

The Reticule Enhancement Module (T-bar) 3b is to be used as a back up to the Black Ring Sight. Try to rely on the Black Crosshairs when possible.

The Reticule Enhancement Module 3b (REM T3b) fixes the problem that is inherent in the Black Ring Sight. We all know in certain low light conditions the Ring Sight looses its sight picture. When that happens just turn on the REM T3b and you will get a sharp T bar sight picture.

The REM T3b Illuminates the T bar via a colored LED red or greenor blue that is attached to the underside of the Ring Sight. There needs to be minor drilling and gluing to affix the T3b to the Sight.

It has 11 illumination settings so the T bar can be seen outdoors in daylight (on its brightest setting) or in total darkness (on its lowest setting). The REM T3b fits in the sling well just under the Ring Sight. It is ambidextrous so it can be mounted on the left or right side of the rifle.

The REM T3b uses one CR2032 3 volt battery. The battery life is 106 hours of continuous use.

Since we did not make the Rheostats...
The REM T3b has a 1 YEAR Warranty. I will replace it if it fails due to a manufacturing problem. (I will have to examine it first to make sure there wasn't some other factor that caused the failure). You just pay for the shipping ($5.00). If after 1 year a manufacturing problem should occur... contact me and I will see what I can do for you.

The REM T3 comes with a 30 day money back guarantee. If you are dissatisfied with it, please send it back to me and I will give you a full refund. (You just pay the shipping)

Will this module also be compatible with white reticule sights (i have PS90s with both)?

No.
The white reticle sight needs the LED housing to fit in the light collection well while the
black reticle sight needs the LED to be permanently attached to the underside. Also, the wire needs to be 1/2 inch longer.

There needs to be a minor operation on the USG sight in order to expose the tritium bar and to attach the LED. Make sure you don't cut too deep or you may damage the glass optic.I'll do the procedure at no extra cost.

You will need a Dremel and use this tool to drill a hole in the rubber Tritium cover.

You will also need an exacto knife to finish cleaning out the hole to expose the Tritium.

NOW THE FUN STARTS.

1) Cut a small hole the size of the LED and expose the Tritium bar. Be careful not to drill the Tritium. (drill slowly)

2)Make sure the hole is centered.

3) Finish removing debris from hole by cutting the rubber and pulling it out with tweezers.

4) Picture of completed hole.

5) Use 5 minute epoxy to attach T3b to Ring Sight

6) Immobilize the T3b to the Ring Sight and insert the LED into the hole.
Hold it in place with the tip of the exacto knife.

7) While holding the LED in place, Cover the LED and rubber area and part of the metal with the 5 minute epoxy. You will have to hold the LED for 5 minutes.

8) After 5 minutes pull out the knife and then use the back flat part of the knife to hold the LED in place untill the epoxy solidifies. (another 5 munites)

9) Completed process.

10) Carefully bend the LED wire to the side of the Ring Sight you desire.

11) Attach the REM T3b to the rifle and re-attach your Ring Sight.
ALL DONE!!

You can now see the cross hairs in any light condition and against any background. :shock:

Thank you for purchasing this upgrade to your PS90 Ring Sight. The REM T3b was designed to maximize your shooting pleasure by fixing the deficiencies of the Ring Sight.

Installation
1) Carefully bend the LED wire
to the side of the Ring Sight you prefer.
2) Place the dialed rheostat on one side of the Sling Well and the small holder on the other side. Tighten the mounting screws until both sides are secure. Use the Allen wrench that is supplied for this procedure. (DO NOT OVER-TIGHTEN) to prevent damage to the screw pins. You can use BLUE thread locker if you like but it is not necessary.
3) Re-attach your Ring Sight to the PS90.

You can now turn on and use the REM T3b.

NOTE: The REM T3b does not interfere with the Tritium Bar so in total darkness you can still rely on that as a light source if desired.

NOTE: When using the REM T3b in total darkness, with no tactical lights in use, you may notice a slight glow on the front optic glass within short distances (less than 10 feet.) This does not interfere with use of the REM T3b.

Warranty
This Product is warranted against original defects in material and/or manufacturing for one year. This warranty is void if the unit has been abused, disassembled, or modified/tampered with in any way from its original configuration.

This warranty does not apply to defects caused by normal wear and tear, improper handling, incorrect installation, accidents, and alterations/modifications to the original configuration, repairs made by unauthorized parties, aftermarket accessories, or abnormal use.

Contact Us
We hope you find the REM T3b to be a great enhancement. We invite your comments. If you have any questions, concerns or comments, please contact us at 978-852-8584 or croenker@verizon.net.

A couple questions : When mounted, does the wire / dial block the backup iron sights on the side that it is mounted on?
If I send you my optic, can you install the LED, then send it back to me for re-mounting?

The Wire does block the Back up iron sights for the side it is mounted.
I install the T3b to your Ring Sight for free.
Just send me your sight and tell me what color LED ( Red or Green or Blue ) you desire
You can go to my web site http://www.M1bullpup.com" onclick="window.open(this.href);return false; to order :thumb:

good gravy those are cool! I've seen the illumination before, but not in the green and blue. Love the blue, so cool looking.. and the green..and the red :laugh:
I used to have a scope that cycled through red and green, should have kept that .

M1, have considered making a multi-color version? When you turn the power from 1-11 it cycles a color for a section of power levels i.e.: Green for 1-4, Red for 5-8, Blue for 9-11. They make LEDs that can cycle colors correct?
Judging from the pictures you took blue is the brightest i imagine this makes it more effective in higher levels of light (or does it start to wash out on bright, lighter toned backdrops?)
Red looked like a good middle color and green seemed to keep a low yet visible level on #1 making it ideal for dark situations where you don't want to be blinded by your sight.

Or one that cycles through Green for 1-5 and Blue for 6-11 I would jump on that in a heart beat! Is that a possibility? :drool: